Messages in this thread | | | From | Andrey Borzenkov <> | Subject | Re: Suspend/Resume/Hibernation - bisecting or bug-logs? | Date | Fri, 16 Nov 2007 21:00:02 +0300 |
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Kristoffer Ericson wrote:
> Greetings, > > Ive been following your discussion and documentation efforts concerning pm > in the kernel. This has in the past been a gray area which was hard to > find information about so kudos. > > I maintain 2 handheld platforms that would benefit greatly from > implementing proper pm (mainly suspend) but Im having problems bugtracking > it. Currently the system tries to suspend but fails somewhere and then > tries to resume (which fails). The end result however is that Im unable to > see anything (bugmessages...) since the video driver gets deactivated by > pm. > > My question is this: Is bisecting (turning off device support in kernel > until it works) the best approach when bugtracking pm suspend? Or is there > any other logging system that I can use? >
Good question. I could use advice too :)
Bisecting is good only if you have known good and known bad versions. From your description it sounds like it has never worked - so bisecting won't help. Also sometimes bisecting hits way too large commit (this happened to me when ACPI replaced mutex with spinlock).
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